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Employers › CA

Mining, Quarrying, Oil & Gas · Irwindale, CA

Calmat CO

According to OSHA enforcement records (2010–2026), Calmat CO has a relatively clean safety record: 7 violations across 13 inspections. See the full breakdown below.

Lower half by penalty0% serious
$1,890
OSHA penalties
7
Violations cited
13
OSHA inspections
#78,469
of 100,495 penalized employers

Calmat CO in Irwindale, CA has been the subject of 13 OSHA workplace inspections and 7 citations since 2010, according to enforcement records from the U.S. Department of Labor. Total penalties assessed: $1,890. All enforcement data below is sourced from the DOL public enforcement databases at data.dol.gov.

The record in one line

OSHA has inspected Calmat CO 13 times over 10 years, roughly annually. These inspections resulted in 7 violations, averaging 0.5 per inspection, on the lighter side. Its total OSHA penalty ranks in the lower half of penalized employers nationally. Against the Mining, Quarrying, Oil & Gas industry average of 2 inspections per employer, this runs far above peers (6.0x the sector average) on inspection frequency. For comparison, Schlumberger Technology Corporation in Waldron, KS is another mining, quarrying, oil & gas employer with 2 OSHA inspections on record and $1,890 in current penalties.

0.5
violations per inspection
0.0%
of violations were serious
22%
of penalized employers rank lower

How Calmat CO compares on OSHA penalties

Total current penalty vs the Mining, Quarrying, Oil & Gas per-employer average

in penalties

What this shows Calmat CO runs moderately below peers (0.4x the sector average) in total OSHA penalties.

Source U.S. Department of Labor, OSHA enforcement extracts As of 2026

Where this penalty ranks nationally

Total current OSHA penalty vs every U.S. employer with a nonzero penalty

$1,890 Top 22% most affordable more affordable than 78% of 100,495 U.S. employers with a penalty

$0–$5,000: 44,435 U.S. employers with a penalty (44%). This entry sits in this band. $5,000–$10,000: 20,628 U.S. employers with a penalty (21%). Above this entry. $10,000–$15,000: 11,165 U.S. employers with a penalty (11%). Above this entry. $15,000–$20,000: 6,629 U.S. employers with a penalty (7%). Above this entry. $20,000–$25,000: 4,205 U.S. employers with a penalty (4%). Above this entry. $25,000–$30,000: 2,885 U.S. employers with a penalty (3%). Above this entry. $30,000–$35,000: 2,052 U.S. employers with a penalty (2%). Above this entry. $35,000–$40,000: 1,483 U.S. employers with a penalty (1%). Above this entry. $40,000–$45,000: 1,120 U.S. employers with a penalty (1%). Above this entry. $45,000–$50,000: 792 U.S. employers with a penalty (1%). Above this entry. $50,000–$55,000: 5,101 U.S. employers with a penalty (5%). Above this entry. This employer $0 $55,000 every penalized U.S. employer, bucketed by value

Each bar is a $5K-wide band; taller bars hold more U.S. employers with a penalty. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Department of Labor, OSHA enforcement extracts · 2026

What the Data Says About Calmat CO

The federal enforcement record for Calmat CO in Irwindale, CA includes 13 OSHA inspections and 7 violations, translating to 0.54 violations per inspection. Of those violations, 0 (0.0%) were classified as serious, 0 (0.0%) as willful, and 0 (0.0%) as repeat.

OSHA assessed $1,890 in initial penalties against this employer, later adjusted to a current total of $1,890 - no reduction from the original assessment. Average penalty per inspection works out to $145. Against the Mining, Quarrying, Oil & Gas industry average of $4,394 per employer, this record runs moderately below peers (0.4x the sector average).

Inspection activity spans from 2014-10-23 to 2024-12-06, a window of roughly 10 years.

Enforcement detail

OSHA Inspection History

Total Inspections

13

First Inspection

2014-10-23

Last Inspection

2024-12-06

Inspection Span

10 yrs

Violations / Inspection

0.5

Avg Penalty / Inspection

$145

Industry Avg / Inspection

$2,034

What this shows 13 inspections over 10 years, averaging 0.5 violations per visit. That's $145 per inspection vs. the Mining, Quarrying, Oil & Gas average of $2,034.

Enforcement detail

Violation Breakdown

0

Serious

0.0% of total

0

Willful

0.0% of total

0

Repeat

0.0% of total

7

Other-Than-Serious

100.0% of total

What this shows Serious violations involve hazards that could cause death or serious physical harm. Willful violations indicate intentional or knowing disregard of the law. Repeat violations are for hazards previously cited within the past 5 years.

Enforcement detail

Penalty Analysis

Initial Penalty Assessed

$1,890

Current Penalty Amount

$1,890

Penalty Reduction

None

What this shows No reduction on record. The current penalty matches the original OSHA assessment.

Industry Safety Context: Mining, Quarrying, Oil & Gas

How Calmat CO compares to the Mining, Quarrying, Oil & Gas sector, which has 2,359 employers tracked by PlainWorker.

Metric Calmat CO Industry Avg
Inspections 13 2.2
Violations 7 3.1
Total Penalty $1,890 $4,394
Avg Penalty per Inspection $145 $2,034
View all 2,359 employers in Mining, Quarrying, Oil & Gas →

Nearby & Similar Employers in Mining, Quarrying, Oil & Gas

Cunningham Energy LLC
Bomont, WV
2 inspections $1,890
Patterson-Uti Drilling Company, LLC
Waldron, KS
2 inspections $1,890
Schlumberger Technology Corporation
Waldron, KS
2 inspections $1,890
Martin Marietta Aggregates
Dallas, TX
0 inspections $0
Nova Conoco
Aurora, CO
0 inspections $0

Compare Calmat CO vs Cunningham Energy LLC side-by-side →

Frequently Asked Questions

Is Calmat CO safe to work at? ▼
Based on OSHA records, Calmat CO's workplace safety record is relatively clean, with fewer violations than typical. The employer has 7 violations across 13 inspections. Compared to Mining, Quarrying, Oil & Gas industry peers, this is below average for penalties. Review the full inspection history below for details.
How many OSHA violations does Calmat CO have? ▼
Calmat CO has 7 OSHA violations on record, including 0 serious, 0 willful, and 0 repeat violations. The total current penalty amount is $1,890.
How many OSHA inspections has Calmat CO had? ▼
Calmat CO has had 13 OSHA inspections, with the first recorded on 2014-10-23 and the most recent on 2024-12-06. This averages 0.5 violations per inspection.
What is the total penalty amount for Calmat CO? ▼
Calmat CO has been assessed $1,890 in current OSHA penalties.
What industry does Calmat CO operate in? ▼
Calmat CO operates in the Mining, Quarrying, Oil & Gas sector (NAICS code 212321). This industry has 2,359 employers tracked by PlainWorker, with 5,096 total OSHA inspections and $10.36M in cumulative penalties.
How does Calmat CO's safety record compare to industry average? ▼
Calmat CO's total OSHA penalty of $1,890 is below the Mining, Quarrying, Oil & Gas industry average of $4,394 per employer. The employer has 13 inspections compared to the industry average of 2.2 per employer. For a direct comparison, Schlumberger Technology Corporation in Waldron, KS is a similar mining, quarrying, oil & gas employer with $1,890 in current penalties.

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Mining, Quarrying, Oil & Gas Industry

All 2,359 employers in this sector
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Safety Rankings

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What to check next

Calmat CO's record is one establishment in a larger pattern. Use it as a research checklist, not a verdict on the employer overall.

These figures are the federal enforcement record on file and reflect past inspections, not a statement about current workplace conditions. See the disclaimer for how to read them.

Data Sources & Methodology ▼

Data as of 2026. Source: U.S. Department of Labor (OSHA, WHD).

Source: OSHA Enforcement Data

Inspection and violation records from the Occupational Safety and Health Administration (OSHA), U.S. Department of Labor, covering the period 2010–2026. Includes inspection dates, violation types (serious, willful, repeat, other-than-serious), and penalty amounts. Penalties shown are current assessed amounts and may differ from original citations due to settlement, contest, or reduction.

Source: Wage and Hour Division (WHD)

Compliance actions from the WHD, covering enforcement of the Fair Labor Standards Act (FLSA), including minimum wage, overtime, and child labor violations. Back wages represent amounts owed to affected employees as determined by WHD investigations.

Employer Matching

Employers are matched across OSHA and WHD datasets by name, state, and city. Employers included in PlainWorker have 2 or more OSHA inspections or $1,000+ in WHD back wages. Data is updated monthly from data.dol.gov.

Verify with OSHA establishment search →

Every figure on PlainWorker is rendered directly from official U.S. Department of Labor OSHA and Wage & Hour Division enforcement records, no number is typed in by an editor. This employer's ratios (penalty-per-violation, industry comparisons) are computed live from the 13 inspections on record. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026.